    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <title>Document</title>
    </head>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        .zhu{
            width: 1226px;
            height: 615px;
            margin: 100px auto;
        }
        .zhulan{
            width: 978px;
            height: 614px;
            float: right;
        }
        .zi{
            width: 234px;
            height: 614px;
            background-color: #800080;
            float: left;
        }
        .lan{
            width: 234px;
            height: 300px;
            background-color: #87ceeb;
            margin-right: 14px;
            margin-bottom: 14px;
            float: left;
        }
        .lan:nth-child(4n){
            margin-right: 0;
        }
        .lan:nth-child(5+n){
            margin-bottom: 0;
        }
    </style>
    <body>
        <div class="zhu">
        <div class="zi"></div>
        <div class="zhulan">
        <div class="lan"></div>
        <div class="lan"></div>
        <div class="lan"></div>
        <div class="lan"></div>
        <div class="lan"></div>
        <div class="lan"></div>
        <div class="lan"></div>
        <div class="lan"></div>
        </div>
        </div>
    </body>
    </html>